420424234 has 16 divisors (see below), whose sum is σ = 636341760. Its totient is φ = 208319040.

The previous prime is 420424231. The next prime is 420424237. The reversal of 420424234 is 432424024.

It is an interprime number because it is at equal distance from previous prime (420424231) and next prime (420424237).

It is a super-3 number, since 3×420424234³ (a number of 27 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 420424199 and 420424208.

It is not an unprimeable number, because it can be changed into a prime (420424231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106162 + ... + 110050.

It is an arithmetic number, because the mean of its divisors is an integer number (39771360).

Almost surely, 2^420424234 is an apocalyptic number.

420424234 is a deficient number, since it is larger than the sum of its proper divisors (215917526).

420424234 is a wasteful number, since it uses less digits than its factorization.

420424234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4365.

The product of its (nonzero) digits is 6144, while the sum is 25.

The square root of 420424234 is about 20504.2491693795. The cubic root of 420424234 is about 749.1392994521.

Adding to 420424234 its reverse (432424024), we get a palindrome (852848258).

The spelling of 420424234 in words is "four hundred twenty million, four hundred twenty-four thousand, two hundred thirty-four".